Adjustable gear wheel



Oct. 16, 1928. 1,687,987

c. F. MOON ADJUSTABLE GEAR WHEEL Filed Feb. 17, 1927 3 Sheets-Sheet 1 9 C {Moon M5;

\1 V 1,687,987 C. F. MOON ADJUSTABLE GEAR WHEEL Oct. 16, 1928.

Filed Feb. 17, 1927 3 Sheets-Sheet 2 Oct. 16, 1928. 1,687,987

c. F. MOON ADJUSTABLE GEAR WHEEL Filed Feb 17, 1927 5 Sheets-Sheet 3 4 q; 40 I 4 b0 7 5:3 ez v F. 7 WW ma 11 7- 42 l 63 u agwtgel Patented Oct. 16, 1928. v

CLABORN F. MOON, OF FRANKLINVILLE, NORTHLCAROJ IQINA, ASSIGFTOR OF ONE-mil! r ARLINR. LEWIS, OVFFVGREENSBORO, NORTH CAROLINA.

ADJUSTABLE GEAR WHEEL. I

Application filed February-17, 1927. Serial No. 168,977.

' My invention relates to certain improve-- ments in gear'wheels and more particularly to gear wheelscapable of repair or adjust ment and primarily adapted for use in connection with looms, althothe inventionis of course not limited to use in looms alone,-

as it is adapted for a wide rangeof utilities. An ob' ect of my invention is to provide a gear wheel for looms having separable hubs to which the gear wheel maybe adjustabl'ysecured in any desired position, so that when one portion of the gear Wheel has been worn another portion 'ofthe gear upon which'the greatest strain is placed maybe presented.

Anotherobject of my invention is to provide a gear wheel which is adapted to be placed on the pick shaft andcrank shaft of looms, said gear wheel having a separate hub which is capable of any desired adjustment with relation tothe gear wheel. q i 7 It is a well known fact that most of the wear upon the teeth of the cranksha'tt'g'ear in'looms is at the'point of Contact with the comb-shaft gear at the time the loom makes the pick. When the few teeth at thepoint are worn the gear has either to be taken from the shaft re-key-seated andfitted in a new" position, or in the case of some improvements when once the gear is separated justed in a new position. i I I I am aware that heretofore gear wheels have been used in looms 'in which'the gear wheel itself is capable of adjustment with relation to the hub, but in all instances there are onlyfrom four to six positions of ad} justment between the gear and the hub, this adjustment is effected by means of boltspenetrating different holes in the gear andhub, In my invention I have devised means whereby the gear may be adjusted with relation to the hub toany desired "positionand adjusted will remain in adjusted position. 1 f Someof the objects of my invention having been stated, other objects will appearas the description proceed-s, when taken in conne'c tion with accompanying drawings, setting forth" apreferred embodiment of my inven} tion, in which- V I Figure 1 is a vertical cross-sectional view taken through my improved loom gear for Draper looms; V f

Figure 2 is a vertical cross-sectional view taken through my improved'crank shaft gear forDraper looms;

from the hub and ad i member has aqplurality ofholes12 pla d Figure 3 is a view taken along the line 33 in Fi ure 2 lookinginthe direction indicated; 9 Figure 4 is anelevation of my improved Draper'loom gear taken along the line inFigurel;

- Figure 5 is an elevation taken alongthe line 5-5 in Figure 1 looking in' the direction indicated;

Figure 6 is a vertical cross-sectional view: taken through my improvedloom gear for the Stafi'ord looms; 7

Figure 7 is a cross-sectional view taken through rnyimp'rovedcrank shaft gea'rfor Staiford looms;

Figure, 8 is an elevation taken along the line 88 in Figure 7 with the friction pulley removed; I

Figure 9 is a modified form of Figure 2 showing thefuse'of setscrews instead of tapered pins.

been given, a detailed description ofthe same 7 will now follow in which like reference char acters indicate corresponding parts throughout the drawings. 7 p 7 p ".In Figure. 1 I have shown a hub member 10which is adapted to be keyed to the pick shaft of a Draper-loom by having the proper key inserted in 3 the groove 11. This hub around a circle whichhas its center at the, center of the hubflfThis ,hub 10' has a Tshaped',annular groove 13 therein in which i the bolts 14 are adapted to be insertedthrough the hole 15 in a hub 10. Aset screw 16 is also placed in-hub '10 by means of which the hub may be secured on the shaft if the key at range'rnent is not desired. r

' The loom-gearflfis adaptedito fit against the side of hub 10 and has a plurality of Marc thenuts'18; The loom gear 17 has a to be inserted through the holcs inthe gear 17 and into the holes 12 inthe hubm embe'r 10.

'In the crank shaft ge'arfor Draper looms, I provide the pulley 21 having the 1 Abrief description of the drawings having 7 9 holestherein through Which the bolts'14 are adapted to pass, and on'thccnd's of the bolts 1b portion 22,; and over this hub-portion -22=tl1e crank shaft gear 23 is adapted to fit This crank shaft gear has a circular-T-shaped'slot 24 in whichthe bolts 25 are adapted to fit; These (v bolts '25 are-inserted into the 'll-shaped slot no' t through the hole 26 in the gear wheel, and when the bolts are inserted into the T-sha-ped slot through the hole 26 they may be slid around to any desired position as shown in Figure 3.

Located at a constant distance from the ly secured in position and firmly bind the crank shaft gear 23 to the pulley 21 and the pins 28 preserve this adjustment. In case the tapered pins 28 are used as above set forth it isof course apparent that the number of adjustments of the crank shaft 23 with relation to the pulley 21 is limited, but should it be desired the pins 28 may be dispensed with and the holes in the pulley 21 omitted andthe set screws 30 be substituted, and in this case when the crank shaft gear 23is adjusted to the desired position with relation to the pulley .21 the set screws 30 may bedriven home and their points will embed themselves in the surface of the pulley 21 and prevent the adjusted relation from being changed except when desired.

Orin case it should be desired, I can'use both the tapered pins and the set screws as is clearly shown in Figure 4. In Figure 4 the set screws 30 may be used for the purpose of adjusting the angular relation between the hub member and the gear member.

In Figures 6, 7, and 8 I have shown a preferred embodiment of my invention as it relates to the Staffordloom. In my improved loom gear for Stafford. looms I have the hub member 40 which is adapted to be secu-redto the pick shaft by any suitable means such as a key being placed in the slot 41, and in the hub member 40 I have the T-shaped slot already described for the Draper loom which has bolts 43 adapted to be inserted therein through the hole 44, and placed in a circle whose center is the center of the pick shaft is a plurality of holes in which the tapered pins 45 are adapted to be inserted, which pins penetrate corresponding holes in thegear member 46. -Or if desired, the tapered pins may be dispensed with and set screws 47 may be used In case set screws are used exclusively these set screws will be pointed in a manner similar to the set screw 30 in the Draper struc-.

ture. In case both the set screws and pins are used, the pins 45 will. be used for maintaining the parts in adjusted. position and the set screws 47 will. be used for the purpose of ad justing angular relation of the gear 46 to the hub member 40.

; The bolts 43 have nuts thereon, which when tightened hold the parts 40 andi46 in adjusted position. The. gear member 46 has the gears 49 and 50 thereon.

In the Stafford crank shaft gear there is the brake wheel 60 having the hub portion 61, only a portion of the brake wheel 60 bemg shown, as this is the conventional brake wheel.

Brake wheel 60 has a plurality of holes placed at an equal distance from its center in which the bolts 62 are adapted to be placed. Fitting against the brake wheel 60 is the crank shaft gear 63 which has a T-shaped circular.

slot therein, similar to the T-shaped slots previously described in which the heads of the bolts 62 are adapted to fit. by being inserted therein through the hole 64. Located at an equal distance from; the center of the crank shaft is a plurality of holes 65 in which the tapered pins 66 are adapted to fit, and in the brake wheel 60 is likewise located a plurality of holes which match with holes 65in the gear wheel through which the pins 66 are also adapted to fit. Altho I have not shown set screws in Figure 7 yet I desire it to be understood that the set screws 68 may be used in this structure as well as the structure previously described.

011 the f cc of the crank shaft gear opposite the portion which fits against the brake 7 wheel are the projections 70, 71, 72, and 7 3, which have holes therein threaded, to receive the stud bolts 7 4, which stud bolts penetrate the friction pulley 75 and secures the friction pulley to the crank shaft gear. Only a portion of this friction pulley'is shown as it'is the conventional friction pulley used in the Stafford loom. The hub member of the brake wheel 60, which is designated by the numeral 61, may be secured to the crank shaft by means of a key inserted in the groove 7 6 and fitting in a corresponding groove in the crank shaft which is not-shown.

Themethod ofoperation of my device is as follows: The hub portion of any one of these devices is secured to the proper revolving shaft and the gear wheel is placed next to the hub portion, the bolts are placed in the 'T- shaped slots and through the holes in the gear members, and while the bolts are loose the gear member may be rotated with relation to the hub member to any desired position, and

when the nuts are driven home on the bolts the gear member is securely held to the hub member. In order to make assurance doubly sure that the gear member and the hub memberwill remain in adjusted position, the

tapered pins may be driven through the corresponding holes in the hub and gear members, or if desired, the tapered pins may be dispensed'with and the set screws used instead, the set screws givingan indeterminate number of adjustments, or if it is desired to use both the pins and the set screws, the set with relation to the hub member so that the screws may be used to adjust the gear wheel I gear heel will run true and the pins may also be used for retaining the parts in ad- I justed position.

In the drawings and specification I have set forth a preferred embodiment of my invention, and altho specific terms are employed that are used in a generic and descriptive sense only, and not for purposes of limitation,

.the scope of the invention being set forth in the appended claims.

I claim:

1. In an adjustable gear, a hub member, a gear member, holes penetrating one of the members, a circular T-shaped slot in the other member, bolts having their headsmounted for adjustment in the T-shaped slot and having their shanks positioned in the said'holes, and nuts on the smaller ends of the bolts for securing the gear member and hub member together in any desired adjusted relation to each other, a plurality of tapered holes penee trating both the gear member and hubmemher at points equidistant from the center of the gear and hub members, a plurality of tapered pins adapted to be driven in the tapered holes to insure the parts retaining their adjusted relation .to each other.

2. In an adjustable gear, a hub member adapted to be fixedly secured to a rotatable shaft, a gear member adapted to fit against the side of the hub member, a circular slot extending around the hub member, said circular slot being T-shaped in cross section, a

plurality of bolts adapted to have their head both the gear member and the hub member 7 at points equidistant from the center of the gear and hub members, anda plurality of tapered pins adapted to be driven in the tapered holes to hold the gear andhubmemher in adjusted position.

3. In an adjustable gear, a hub member, a gear member, holes in one of the members, a

circular T-shaped slot in the other, bolts loose-- 1y mounted in the T-shaped slot and having their heads disposed in the larger portion'of said slot and having a portion of their shanks positioned in the" contracted portion of the slot, and having a more remote portion of their shanks extending through the said holes and nuts threadably engaging the tips of the bolts for securing the hub and gear together in any desired adjusted relation, a plurality of tapered holes penetrating the gear and hub members, said holes being located at points equidistant from the center of the gear and hub members and a plurality of tapered pins adapted to be driven home in the tapered holes to insure the retention of the adjusted relationbetween the gear and hub members. In testimony-whereof I affix my signature.

CLABORN'R MOON. 

